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Single-Phase Transformer Winding Resistance Meters
RMO-TW Series
RMO-TW series is perfect for winding resistance measurements of inductive objects. It is ideal for testing transformer windings (power transformers, distribution, autotransformers) and for on-load tap changer verification. In addition, any RMO-TW transformer ohmmeter & tap changer analyzer can also perform transformer demagnetization.The series contains 4 models, with maximal test currents from 10 A (RMO10TW) to 50 A (RMO50TW). They are fitted in a portable and lightweight metal housing.All ...show more -
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Electrical Measurement Equipment
Portable equipment designed for maintenance and commissioning of substations and power plants. Low resistance micro ohmmeters, digital timers, windings resistance, contact resistance, circuit breaker timing and motion, phase angle and frequency measurements.
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Motor Winding Ohmmeter
RMO-M Series
The motor/generator winding resistance test is used to identify open windings, shorts between two windings, short to grounds, connection mistakes or shorted turns. This non-invasive test of winding resistance helps to pinpoint problems regarding windings in stator or rotor part of an electrical machine. Additionally, motor winding ohmmeter has the capability of performing heat run test which will show a change in windings resistance with an increase of temperature.The RMO-M series is designed as...show more -
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10A DIGITAL MICRO-OHMMETER
MPK-2000e
The MPK-2000e digital very low resistance ohmmeter is a portable, microprocessor controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1mA up to 10A. It uses the Kelvin-type, four-terminals measurement principle, thus eliminating errors caused by lead and contact resistances.
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10 A portable digital micro-ohmmeter
MPK-253
The MPK-253 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1mA up to 10 A.
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Transformer Turns Ratio Testers
Transformer turns ratio testers from TRT series are DV Power instruments mainly designed for the measurement of power transformer turns ratio. Also, they measure transformer excitation current and phase shift. Special tests, such as automatic vector group detection and magnetic balance, can be performed on three-phase transformers and three-phase autotransformers.All models, except TRT03 series, have a built-in true three-phase power source, which is necessary for testing turns ratio of transfor...show more -
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Transformer Winding Ohmmeter
TWO-110S
Transformer Winding Ohmmeter is designed to measure the dc resistance of all types of magnetic windings accurately. It can test transformers and rotating machine windings and perform low-current resistance measurement on connections, contacts and control circuits.
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1 A DIGITAL MILIOHMMETER
MO-2Ke
The MO-2Ke digital low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of contacts, switches, transformer and motor windings, etc., using test currents from 1 mA up to 1 A.It uses the Kelvin-type (4-terminals) measurement principle, thus eliminating errors caused by lead and contact resistances.Resistance readings are shown in the alphanumeric display with up to a 4 digit-resolution. It allows to measure resistances of up to 2 kO, with resolution of 0.01 mO.Measurements accuracy is guaranteed by the state-of-the-art system for signal-amplification, offset-free and with long-term stability.
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Transformer Winding Resistance Meters
RMO TT Series
The Tap Changer Analyzer & Winding Ohmmeter of the RMO-TT series is designed for winding resistance measurement of inductive objects, and for a tap changer analysis. The RMO-TT series is based on the state of the art technology, using the most advanced switch mode technology available today. The RMO-TT instruments are accurate (0,1%), powerful (up to 100 A) and still portable. The Instruments generate a true DC ripple free current with automatically regulated measurement and discharging circ...show more -
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Three-Phase Transformer Winding Resistance Meters
TWA Advanced Series
TWA Advanced series is the latest DV Power solution for three-phase transformer winding resistance measurement and tap changer analysis. They are capable of testing six transformer windings with a single cable connection, as well as three-phase automatic transformer demagnetization. It has the option of the automated test mode, where the instrument operates the tap changer without operator input (minimizing the risk of human error) and records winding resistance results based on pre-selected sta...show more -
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Motor/Generator Test Equipment
Winding ohmmeters RMO-M series measure winding resistance of inductive test objects such as electrical motors and generators. Motor test or generator test of winding resistance is especially important for early-stage failure detection.RMO-M series instruments generate true DC ripple-free current with automatically regulated measurement and discharge process. Even more, test instruments are portable and enclosed in a metal casing.Applications supported by DV Power motor/generator test equipment i...show more -
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5 A portable digital micro-ohmmeter
MPK-254
The MPK-254 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1 mA up to 5 A.
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Tap Changer Analyzers & Winding Ohmmeters
Winding resistance test of inductive test objects, such as power transformers, is one of the most effective non-intrusive ways of checking its condition. Due to their advanced design, DV Power winding resistance meters provide high test currents (up to 100 A DC) and high accuracy (up to 0.1%) within light and portable test instruments. In addition to winding resistance measurement, it is also possible to perform simple, quick and reliable transformer on-load tap changer condition assessment by r...show more -
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Three-Phase Transformer Winding Resistance Meters
TWA Standard Series
When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test. The built-in tap changer control unit enables...show more -
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Ohmmeters
Ohmmeters by Tegam including milli-ohmmeters, microohmmeters, megohmmeters, 4-wire probes, and microohmmeters
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Ohmmeters
GAOTek provides state of the art, professional grade Ohmmeters for sale to the United States, Canada and Globally. GAOTek Ohmmeters are portable instruments that accurately measure electrical resistance between two points on a circuit. The Ohmmeters have their own power supply through their own battery, and are needed when the two probes (red: positive side of circuit, black: negative side of circuit) are connected to the two points in the circuit where the desired measurement is to take place. ...show more -
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TERA Ohmmeter
Due to its compact design and battery operation, our TERA ohmmeters are ideally suited for mobile applications in industrial areas; They can also be in a stationary way through their mains connection. They are operated by only two buttons, are menu-driven and therefore very user-friendly. All settings are in the LCD display.
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Winding Resistance Test
20A DC booster
The 20A DC STCS booster allows to perform resistance tests on a PT with a current up to 20 A DC. The option is used together with STS 5000 and STS 4000 and must be connected to STCS module.
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OHMMETERS
DOT-1000-2
Model DOT-1000-2, is an ac four-terminal ohmmeter to be used for the measurement of dynamic ac resistance of batteries, fuel cells and other voltage sources.
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Micro Ohmmeter
HTHL-100B / 382
Wuhan Huatian Electric Power Automation Co., Ltd.
Special equipment for field high voltage switch maintenance and high voltage switch circuit resistance test in power supply department.
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WINDING COIL TURNS TESTER
VE201R
Winding Turns Tester for Counting Measuring Number of Turns for Air Core Coils, Bobbin Coils or Solenoid Coils. Can Measure : Turns along with Winding Polarity and DC Resistance.Turns Measurement : 1 Turns to 80,000 Turns
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Winding Resistance Meter
TRM 50+
SCOPE introduces 50 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 50 is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistanc...show more -
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Compliance Voltage Ohmmeter
ΩhmRanger-LCV
ΩhmRanger-LCV is an accurate, 3.5 Digit, Low Compliance Voltage Ohmmeter. It is able to measure from >100M to 10 Ohms, ΩhmRanger-LCV is suitable for professionals and enthusiasts alike.
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Micro Ohmmeter
HTHL-100A / 380
Wuhan Huatian Electric Power Automation Co., Ltd.
Special instrument for circuit resistance measurement.
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Direct Winding Transformer Monitors
Real time comparison of calculated and direct winding temperatures
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Micro Ohmmeter
HTHL-200A / 381
Wuhan Huatian Electric Power Automation Co., Ltd.
Special instrument for circuit resistance measurement.
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Transformer Winding Resistance Meters
Vanguard Instruments Company, Inc.
The TRM-40 is Vanguard Instruments’ third generation transformer winding resistance meter. The TRM-40 is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or any dc resistance of an inductive device.
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Bobbin Winding Coil Turn Tester
SS108 Series
This (SS108** series) winding coil turn testers are used for testing turn of various coils without core, like as: generator winding, transformer winding, relay, inductor, contactor, ignition coil, voice coil, etc.
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Digital Micro Ohmmeters
Our micro-processor controlled range of units offers the testing capability of up to 600 amps DC with 0.1μΩ resolution. Auto-ranging metering simultaneously displays all three parameters (mV, A, and μΩ).